Collection 41164, Grassy Spring Mb., Pioche Shale, NV - Eddy and McCollum 1998 (Cambrian of the United States)

Where: Lincoln County, Nevada (37.8° N, 114.6° W: paleocoordinates 3.2° S, 93.1° W)

• outcrop-level geographic resolution

When: Albertella Biozone zone, Grassy Spring Member (Pioche Shale Formation), Solvan (510.2 - 504.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lithified packstone

• bioclastics(interpretted from the stratigraphic columns of figure 3).

Collection methods: Only trilobites from the Albertella highlandensis subbiozone were collected.

Primary reference: J. D. Eddy and L. B. McCollum. 1998. Early Middle Cambrian Albertella biozone trilobites of the Pioche Shale, southeastern Nevada. Journal of Paleontology 72(5):864-887 [M. Patzkowsky/P. Borkow/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9462: authorized by Mark Patzkowsky, entered by Phil Borkow on 05.11.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Corynexochida -
Corynexochida indet.
Corynexochida indet. Kobayashi 1935 trilobite
1 pygidium [originally entered as "Corynexochid pygidium.undet"]
 Corynexochida - Dorypygidae
Dorypygidae indet.
Dorypygidae indet. Kobayashi 1935 trilobite
1 pygidium (species not indentifyable) [originally entered as "Dorpygidae sp."]
 Corynexochida - Zacanthoididae
Albertella highlandensis n. sp., cf. Mexicaspis difuntosensis
Albertella highlandensis n. sp. Eddy and McCollum 1998 trilobite
10 cranidia, 11 pygidia, 10 librigena, 1 hypostome
cf. Mexicaspis difuntosensis Lochman 1952 trilobite
8 pygidia
 Ptychopariida -
Mexicella mexicana
Mexicella mexicana Lochman 1948 trilobite
50 cranidia
 Ptychopariida - Ptychopariidae
Plagiura minor, Volocephalina connexa
Plagiura minor Palmer and Halley 1979 trilobite
8 cranidia
Volocephalina connexa Palmer and Halley 1979 trilobite
2 cranidia